<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sax">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="btnFn">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sax }}</td>
          <td>
            <button @click="delFn(index)">删除</button>
            <button @click="bianFn(item)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      arr: [
        {
          name: "小李",
          age: 20,
          sax: "男",
        },
        {
          name: "小红",
          age: 16,
          sax: "女",
        },
      ],
      name: "",
      age: "",
      sax: "",
    };
  },
  methods: {
    btnFn() {
      if (this.name === "" || this.age <= 0 || this.sax === "") {
        alert("不能为空");
        return;
      }
      this.arr.push({
        name: this.name,
        age: this.age,
        sax: this.sax,
      });
    },
    delFn(index) {
      this.arr.splice(index, 1);
    },
    bianFn(item) {
      this.name = item.name;
      this.age = item.age;
      this.sax = item.sax;
    },
  },
};
</script>
